Photochromic super-hydrophobic functional paper as well as preparation method and application thereof

A photochromic and super-hydrophobic technology, applied in the field of papermaking, can solve problems such as limiting the large-scale application of paper products

Inactive Publication Date: 2021-09-07
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous development of papermaking technology, the total production of paper and cardboard in my country is also rising, but the surface of traditional paper

Method used

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  • Photochromic super-hydrophobic functional paper as well as preparation method and application thereof
  • Photochromic super-hydrophobic functional paper as well as preparation method and application thereof
  • Photochromic super-hydrophobic functional paper as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Fully stir 10g of ammonium metatungstate, 4g of polyvinylpyrrolidone, 2.2g of ethylene glycol and 22g of water to obtain mixed solution A.

[0032] (2) 0.8g of silicon dioxide, 20g of n-hexane, and 1.2g of polydimethylsiloxane were mixed and stirred to obtain a mixed solution B.

[0033] (3) The obtained mixed solution A is evenly coated on the surface of the paper with a coating thickness of 100 μm, and dried at room temperature (24-26° C., 40-50%) to obtain a pre-coated paper.

[0034] (4) Spray the obtained mixed solution B evenly with a spray gun (spraying distance: 20cm) onto the surface of the pre-coated paper, and place it in an oven (60°C) for 3 hours.

[0035] (5) The dried sample was taken out, and the above-mentioned spraying and drying treatments were repeated to obtain a photochromic superhydrophobic functional paper.

Embodiment 2

[0037] (1) Fully stir 20g of ammonium metatungstate, 4g of polyvinylpyrrolidone, 2.2g of ethylene glycol and 22g of water to obtain mixed solution A.

[0038] (2) 0.7g of silicon dioxide, 22g of n-hexane, and 1.2g of polydimethylsiloxane were mixed and stirred to obtain a mixed solution B.

[0039] (3) The obtained mixed solution A is evenly coated on the surface of the paper with a coating thickness of 100 μm, and dried at room temperature (24-26° C., 40-50%) to obtain a pre-coated paper.

[0040] (4) Spray the obtained mixed solution B evenly with a spray gun (spraying distance: 25cm) onto the surface of the pre-coated paper, and place it in an oven (40°C) for 6 hours.

[0041] (5) The dried sample was taken out, and the last spraying and drying process was repeated to obtain a photochromic superhydrophobic functional paper.

Embodiment 3

[0043] (1) Fully stir 40g ammonium metatungstate, 3g polyvinylpyrrolidone, 2g ethylene glycol and 22g water to obtain mixed solution A.

[0044] (2) 0.4 g of silicon dioxide, 15 g of n-hexane, and 0.5 g of polydimethylsiloxane were mixed and stirred to obtain a mixed solution B.

[0045] (3) The obtained mixed solution A is evenly coated on the surface of the paper with a coating thickness of 150 μm, and dried at room temperature (24-26° C., 40-50%) to obtain a pre-coated paper.

[0046] (4) Spray the obtained mixed solution B evenly with a spray gun (spraying distance: 30cm) onto the surface of the pre-coated paper, and place it in an oven (80°C) for 2 hours.

[0047] (5) The dried sample was taken out, and the last spraying and drying process was repeated to obtain a photochromic superhydrophobic functional paper.

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Abstract

The invention belongs to the technical field of papermaking, and particularly discloses photochromic super-hydrophobic functional paper as well as a preparation method and application thereof. The method comprises the following steps: (1) dissolving a tungsten-containing compound, a plasticizer and a macromolecular adhesive in a solvent to obtain a mixed solution A; and uniformly coating on the surface of paper, and drying to obtain pre-coated paper; (2) uniformly mixing heat-resistant nanoparticles, a hydrophobic adhesive and a volatile solvent to obtain a mixed solution B; and uniformly spraying the mixed solution B onto the surface of the pre-coated paper obtained in the step (1), and drying; and (3) repeating the step (2), carrying out secondary spraying, and then carrying out drying treatment to obtain the photochromic super-hydrophobic functional paper. The photochromic super-hydrophobic functional paper disclosed by the invention is simple in preparation process and high in ultraviolet light response rate, and the color can be continuously maintained for more than 6 hours after ultraviolet radiation is stopped; and the functional paper is soft and easy to fold, the contact angle between the surface and water is larger than 150 degrees, and the functional paper has good liquid blocking performance.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a photochromic superhydrophobic functional paper and a preparation method and application thereof. Background technique [0002] The paper industry is an indispensable part of my country's national economy, and the production and consumption of paper has already become one of the symbols to measure the level of modernization and civilization of the country. With the continuous development of papermaking technology, the total production of paper and cardboard in my country is also rising, but the surface of traditional paper has strong water absorption due to a large number of hydrophilic hydroxyl groups, which limits the larger size of paper products to a certain extent. scale applications. [0003] As a bionic material, superhydrophobic materials have great application potential in many fields due to their non-stick and self-cleaning properties, such as antifouli...

Claims

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Application Information

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IPC IPC(8): D21H23/52D21H23/50D21H21/16D21H21/28
CPCD21H23/52D21H23/50D21H21/16D21H21/28
Inventor 徐峻万金铭李军王斌李金鹏陈克复
Owner SOUTH CHINA UNIV OF TECH
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